88 Series 3 Commercial Gas Oil Boiler

The Weil-McLain 88 Series 3 Water Boiler is a durable, high-efficiency system built for commercial and institutional use. With capacities from 960 to 5,440 MBH and up to 88% combustion efficiency, it supports gas, oil, or dual-fuel options. Its cast iron design, flexible installation formats, and easy maintenance access make it a reliable, long-lasting heating solution.

Key Features

• High Efficiency: Up to 85.6% thermal efficiency. 
• Flexible Firing: Supports On/Off, Low/High/Off, Low/High/Low, or Full Modulation modes. 
• Fuel Flexibility: Compatible with gas, oil, or gas/oil combinations. 
• Packaged or Knockdown Installation: Provides installation flexibility for different project site conditions. 
• Steam Boiler Design: Built specifically to serve steam systems with inputs ranging from about 1,010 to 5,845 MBH. 
• LEED Compliant: Meets standards for energy-efficient and sustainable building systems. 

Typical Applications
Perfect for commercial buildings requiring steam heating, such as large educational campuses, healthcare facilities, multi-unit housing, or industrial sites where system reliability and efficiency matter.

Why It Stands Out
The 88 Series 2 combines the strength and longevity of cast-iron construction with state-of-the-art flexibility and efficiency. For project specs that require high-efficiency steam generation, fuel versatility, and simplified installation, this boiler delivers.